British Aerospace Jetstream

The Jetstream originated in the mid-1960s as a Handley Page design for a small pressurized turboprop airliner, intended to fill a niche between light twins and larger commuter aircraft. The prototype first flew on 18 August 1967, powered by Turbomeca Astazou engines, but production delays and financial difficulties led to Handley Page's bankruptcy in 1970. The rights were acquired by Scottish Aviation, which produced a small number of Jetstream 1s before the design was re-engined with Garrett TPE331 turboprops as the Jetstream 31, entering service in 1982 under British Aerospace.

The Jetstream 31 became the most successful variant, with over 380 units sold, used by regional airlines such as British Midland and Eastern Airways, as well as corporate operators. The Jetstream 32 added increased gross weight and improved performance, while the Jetstream 41, a stretched version with a new wing and T-tail, first flew in 1991 but sold only 100 units due to intense competition. The type has been used for military training, maritime patrol, and even as a testbed for avionics, with some examples still flying in the 2020s in niche roles.

One obscure fact is that the Jetstream 1 was originally marketed as a 'business aircraft' with a toilet and galley, but airlines quickly adopted it. The Jetstream 41 was the last aircraft designed by British Aerospace before the formation of BAE Systems, and its production line closed in 1997. A single Jetstream 31 was modified as the 'Jetstream 31E' with winglets, but the upgrade was not adopted. The type also served with the Royal Air Force as the Jetstream T.1 for navigator training, and a few were used by the US Navy as utility transports.

Beyond airlines, the Jetstream has been operated by government agencies, including the UK's Civil Aviation Authority for flight calibration and the Japanese Coast Guard for patrol. The aircraft's high-wing design provides good visibility and easy loading, making it popular for cargo and special missions. Although production ceased, the type remains in service with small operators, and its design influenced later turboprops like the Dornier 328. The Jetstream's longevity is a testament to its robust construction and adaptability.

Turboprop

An aircraft powered by a turbine engine that drives a propeller.

Pressurized cabin

A cabin that maintains a higher internal pressure than the outside atmosphere, allowing flight at higher altitudes.

T-tail

A tail configuration where the horizontal stabilizer is mounted on top of the vertical fin.